George c



(NoModeL.)

` G. C. PYLE.

STEAM TT.RB11\IE.A No. 543,701. Patented July 30., 1895.

my, .5 m,

NITED STATES FFICE.

PATENT.

lGEORGE o. PYLE, or INDIANAPOLIS, INDIANA, AssIGNoR oE ONE-HALE To FRANK H. EVVERS, OF SAME PLACE.

SPECIFICATION formingpart of Letters Patent No. 543,701, dated July 30, 1895.

Application filed Goto-ber 1,1894. Serial No. 524,617. (No model.)

To @ZZ whom it may concern.-

Be it known that I, GEORGE C. PYLE, of Indianapolis, county of Marion, and State of Indiana, have invented certain new and useful Improvements in Steam-Turbines; and I do hereby declare that the following is a full, clear, and exact description thereof, refer- ,ence being had tothe accompanying drawings, in which like letters and numerals refer to like parts.

My invention relates to a steam-turbine of a novel pattern, whereby I am enabled to procure the same amount of power with a much smaller device than in the steam-turbines heretofore in use. While it is adapted to drive any kind of machinery, still it is designed with special reference to electric headlight apparatus Where adevice of very small capacity is desired to generate considerable power. This turbine when used for electric headlight apparatus on locomotives is fed by steam from the locomotive.

An important feature consists in mounting two or more wheels on the shaft within the casing, each provided with concentric series of buckets, the series in all the wheels corresponding with each other, and being so arranged that the steam will pass through the outer series of buckets in all the wheels and be deflected back through the next series toward the center, and so on until the steam escapes from the exhaust-opening in the center of the wheel. In this sinuous passage of the steam it is deected from one wheel to another and from one series of buckets to another in such manner that all the wheels will be driven in the samedirection, and the full force and velocity of the steam will be expended in driving the wheels, whereby greater velocity can be attained than by the old form of wheel. With this construction the diameter of the Wheel can be materially reduced.

The features of my invention will appear more fully from the accompanying drawings and the following description.

In the drawings, Figure l is a side elevation of my turbine With the parts broken away so as to present the various parts of the Wheel in longitudinal section, the parts A, B,

C, D, and E being sectional views on the lines On the basel I mount one side of the cas-I ing 2, to which the side of the casing 3 is secured by bolts 4. In this casing is provided suitable bushing-bearings 5, in which is mountedfthe driving-shaft 6, carrying the hub 7 of the wheels 8 and 9. There may be any number of these wheels and each one be separately secured to the shaft. Both of the wheels are mounted on one hub, one being shown here integral with the hub and the other secured thereto.

l0 are annular ribs or bands, between which are placed the series of buckets 1l. These buckets extend in one direction radially and in the other at an angle to the axis of the Wheel. The angle to the axis of the Wheel at which one series of buckets is placed is the reverse of the angle at which tbe adjoining series of buckets is placed. Between the wheels I secure a stationary partition l2, having ribs or bands also like those of the Wheels, but instead of being provided with buckets it is provided with deliectors I3, preferably curved and placed at an angle the reverse of the angle at which the buckets on each side of them yare placed, as shown in Fig. 8. The corresponding series of buckets in the various Wheels and of defiectors in the partitions therefor provide a horizontal steam passageway. Registering with each pair of buckets, counting from the circumference toward the center of the wheel, is a groove or steam-pass 14 formed in the casing, whereby the steam from an outer series of buckets is deflected and returned back through the next inner series of buckets, and a similar groove or steampass is formed in the opposite casing, whereby the steam is conveyed from the second to the third series of buckets, and so on until the inner chamber of the wheel is reached. These grooves or steam-passes I4 are provided with ribs 15, which extend at a slight angle to the radius of the wheel inclined in the direction of the movement of the wheel, which is shown by the arrows. This inclination is for the purpose of allowing free passage of steam from an outer to an inner series of buckets, inasmuch as the steam, instead of having a tend- ICO io dicularly to the side of the Wheel and so as to enable steam to engage the outer series of buckets. The steam engages the outer series of buckets in the Wheel 8, and is deiiected backward against the outer series of deflectors 13, which defiect it in a forward direction, whereupon it engages the outer series of buckets in the wheel 9. Thence it passes through the grooves or steam-passes 10 to the second series of bucketsin the Wheel 9. These zo buckets are setat a reverse angle to those in the first series as the steam passes through them in a direction the opposite of its passage through the first. The same thing is truc of the second series of deiiectors. They 25. are set in a position the reverse of that in the firstseries, but also reverse to the buckets on each side of them. The steam passes back then through the second series of buckets and defiectors `and is conducted by a steam-pass 3o in the case 2 to the third series, and so on,

passing through a sinuous passage from the circumference toward the center of the Wheel, from whence it passes out through the exhaust-opening 19. As shown here the exhaust- 55 opening is double.

It is apparent from this description that I am enabled to get a greater velocity out of the same head of steam by means of the smaller device than by the old form of turbine or by- 4c asingle Wheel.

The increase in etlciency and decrease in dimensions are qualities of great value in a motor for generating electricity to supply the electric headlight.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is the following:

l. In a steam turbine, a plurality of wheels, each provided with concentric series of buckets, the series in the Wheels registering with each other, a circumferential steam chamber 5o beside an outer series of buckets, means of defiecting the steam from the series in one Wheel to the corresponding series in the other wheels, and means of returning the steam after it has passed through an outer series of buckets to an inner series of buckets.

2; In a steam turbine, a plurality of wheels provided with concentric series of buckets which are set at an angle to the axis of the Wheel, a circumferential steam chamber beside an outer series of buckets, and stationary deflectors located between the corresponding series of buckets in the Wheels and being placed at an angle the reverse of the buckets on each side of them.

3. In a steam turbine, a plurality of Wheels provided with concentric series of buckets, each series of bucketsin the separate Wheels being placed at an angle to the axis the reverse of the angle at which the buckets on each side of such series are placed, stationary detlecfors between the corresponding series of buckets in the Wheels and placed at an angle the reverse of the angle at which the buckets on each side of them are placed, and p Wheel the reverse of the angle at which the adjoining series in each Wheel is set, a stationary partition between the wheels provided with deflectors set at an angle the reverse of the buckets on each side of the same, grooves in the casing on each side of such wheels forming steam passes from au outer to an inner series of buckets successively, ports in the casing for the admission of steam to the outer series of buckets, and an exhaust opening in the center of the Wheel.

In witness whereof I have hereunto set my hand this 22d day of September, 189i.

GEORGE C. PYLE. \Vitnesses:

V. lf. Lockwoon, LELA MONROE. 

